531085061 has 8 divisors (see below), whose sum is σ = 573893880. Its totient is φ = 488555712.

The previous prime is 531085003. The next prime is 531085067. The reversal of 531085061 is 160580135.

It can be written as a sum of positive squares in 4 ways, for example, as 25060036 + 506025025 = 5006^2 + 22495^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-531085061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531085067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65906 + ... + 73523.

It is an arithmetic number, because the mean of its divisors is an integer number (71736735).

Almost surely, 2^531085061 is an apocalyptic number.

It is an amenable number.

531085061 is a deficient number, since it is larger than the sum of its proper divisors (42808819).

531085061 is a wasteful number, since it uses less digits than its factorization.

531085061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139735.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 531085061 is about 23045.2828361901. The cubic root of 531085061 is about 809.8191238661.

The spelling of 531085061 in words is "five hundred thirty-one million, eighty-five thousand, sixty-one".